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Description
There is an Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache SkyWalking.
This issue affects Apache SkyWalking versions <= 10.2.0.
Users are recommended to upgrade to version 10.3.0, which fixes the issue. Version 10.3.0 has not been uploaded to the Maven registry at time of publish, please see release notes for download instructions.
Basic information
Type
reviewed
Severity
medium Advisory on GitHub
Open advisory ↗ Repository advisory
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Source code
Browse source ↗ Published (advisory)
2025-11-27 12:30:29 UTC
Updated
2026-04-14 21:57:22 UTC
GitHub reviewed
2025-12-05 21:46:59 UTC
NVD published
2025-11-27
EPSS Score
Score
Percentile
0.45%
63.52%
CVSS Scores
Base score
Version
Severity
Vector
6.1
3.1
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CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
CWEs
CWE id
Name
CWE-80
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
maven
org.apache.skywalking:apm-webapp <= 10.1.0
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cvelogic
Threat Intelligence